Thanks, what I was asking was:
1- Can I set TM to at least keep a few versions of all years going back from when it starts or is in progress? I would prefer to see at least a few versions kept from old years, than more from just last two years.
Not that I'm aware of; Time Machine does what Time Machine does.
As an example, my TM backup goes to 2015, presumably everything I ever had on my HD. If versions are different from one another, then they should be there. The backup drive is a 4 TB (previously it was a 2 TB) of my 1.2 TB Mac HD.
